TW200535879A - Choke coil - Google Patents
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- TW200535879A TW200535879A TW93111207A TW93111207A TW200535879A TW 200535879 A TW200535879 A TW 200535879A TW 93111207 A TW93111207 A TW 93111207A TW 93111207 A TW93111207 A TW 93111207A TW 200535879 A TW200535879 A TW 200535879A
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- 238000004804 winding Methods 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims description 15
- 235000013372 meat Nutrition 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000004814 ceramic processing Methods 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
Description
200535879 五、發明說明（1) 【發明所屬之技術領域】 本發明是有關於一種抗流線圈，且特別是有關於一種 兼具抑制一般模式雜訊及共模模式雜訊的抗流線圈。 【先前技術】200535879 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a current-resistant coil, and more particularly to a current-resistant coil capable of suppressing general mode noise and common mode noise. [Prior art]
電磁干擾（EMI ， Electromagnetic Interference)是 當代電子產品設計的一大挑戰。現代電子產品裡頭充斥著 各式各樣的石英震盪器（crystal oscillators)、電壓控 制震盪器（V0C)或積體電路的PLL(鎖相迴路）等電子零件。 此些電子零件皆有可能是電磁干擾的來源。 一般而言，從電子零件釋放出或是透過電路、通訊回 路而流回電子零件的電流雜訊，其混合了 一般模式雜訊 (common mode noise)及共模模式雜訊（normai mode noise)的電磁干擾〇 為了抑制此些流入或流出的雜訊，過濾掉電磁干擾； 在電子零件上需設置對應各種雜訊模式的抗流線圈（ch〇k CO 1 1 )。然而，一旦為了對應不同的雜訊模式而設置抗流 線圈的話，不僅產品零件數會增加，抗流線圈相對於電與 基板的佔有面積也會增大，因而難以達成裝置的小型化c 在環型鐵心上繞入一組線圈，便可具有一般模式的交 果，可抑制一般模式雜訊。如果採用兩條線丘繞，、雖有寺Electromagnetic interference (EMI, Electromagnetic Interference) is a major challenge in the design of contemporary electronic products. Modern electronic products are full of electronic parts such as crystal oscillators, voltage-controlled oscillators (V0C) or integrated circuit PLLs (phase-locked loops). These electronic parts may be the source of electromagnetic interference. Generally speaking, current noise released from electronic parts or flowing back to electronic parts through circuits and communication circuits is a mixture of common mode noise and common mode noise. Electromagnetic interference: In order to suppress these inflow or outflow noise, filter out electromagnetic interference; electronic components need to be equipped with anti-current coils (chOk CO 1 1) corresponding to various noise modes. However, once the current-resistant coils are installed to cope with different noise modes, not only the number of product parts will increase, but also the area occupied by the current-resistant coils with respect to electricity and the substrate will increase, making it difficult to achieve miniaturization of devices By winding a set of coils on the core, the cross-talk of normal mode can be achieved, and general mode noise can be suppressed. If you use two line mounds,
ί效U Ϊ制共模模式雜訊’但因為磁力：不對稱的海 故，共杈效果不明顯。效 Effective U-mode common mode noise ”but because of the magnetic force: asymmetrical sea, the common branch effect is not obvious.
200535879 五、發明說明（2) 雜訊。但是，其結構較為複雜，因而有難以製造的問題 點。 【發明内容】 有鑑於上述問題點，本發明的目的就是提供一種抗流 線圈，兼具一般模式及共模效果，而可同時抑制一般模式 雜訊及共模模式雜訊。 本發明的又一目的是提供一種抗流線圈，其結構簡 化，可減少零件數，縮小尺寸，因而可降低製造成本。 為了達成上述及其他目的，本發明提供一種抗流線 圈，包括：8字型磁芯、第一線圈，以及第二線圈。其中8 字型磁芯包括第一環部、第二環部，且第一環部與第二環 部藉由部分共用而連結以構成連結部。第一線圈纏繞第一 環部與連結部。第二線圈纏繞第二環部與連結部。且8字 型磁芯為對稱狀，第一線圈與第二線圈的繞線方式相對 稱。 因為8字型磁芯為對稱狀，且第一線圈與第二線圈的 繞線方式相對稱，藉由此特徵，可使第一線圈與第二線圈 的磁力線呈對稱分佈。又因為第一線圈與第二線圈中各有 一部分是纏繞在連結部上，因而共模效果顯著，可明顯抑 制共模模式雜訊。 在此並不限制第一環部與第二環部的形狀，只要能使 第一線圈與第二線圈生成的磁力線分佈相對稱即可。舉例 而言，可使第一環部與第二環部形狀相同，或為圓形，或 為多邊形皆可。較佳的是，連結部之肉厚寬度、第一環部200535879 V. Description of invention (2) Noise. However, its structure is complicated, and it has a problem that it is difficult to manufacture. [Summary of the Invention] In view of the above problems, an object of the present invention is to provide a current-resistant coil, which has both general mode and common mode effects, and can suppress both general mode noise and common mode noise. Another object of the present invention is to provide a current-resistant coil, which has a simplified structure, can reduce the number of parts, and can reduce the size, thereby reducing the manufacturing cost. In order to achieve the above and other objects, the present invention provides a current-resistant coil, which includes a figure 8 core, a first coil, and a second coil. The figure 8 magnetic core includes a first ring portion and a second ring portion, and the first ring portion and the second ring portion are partially connected to form a connection portion. The first coil is wound around the first ring portion and the connection portion. The second coil is wound around the second ring portion and the connection portion. The figure 8 magnetic core is symmetrical, and the windings of the first coil and the second coil are symmetrical. Because the figure 8 core is symmetrical, and the winding patterns of the first coil and the second coil are symmetrical, with this feature, the magnetic field lines of the first coil and the second coil can be symmetrically distributed. In addition, since a part of the first coil and the second coil are each wound on the connecting portion, the common mode effect is remarkable, and the common mode noise can be significantly suppressed. The shapes of the first ring portion and the second ring portion are not limited here, as long as the distribution of the magnetic field lines generated by the first coil and the second coil is symmetrical. For example, the first ring portion and the second ring portion may have the same shape, or may be circular or polygonal. Preferably, the flesh width of the connecting portion, the first ring portion
13270twf.ptd 第7頁 200535879 五、發明說明（3) 、A旱寬度J ^及第二環部的肉厚寬度彼此相等。 、又’ 8字型磁芯之結構是為了使第一線圈及第二線圈 的磁力線为佈對稱’其製造方式不限，例如可為鑄造 casting)陶究製程（ceramic processing)、粉末冶金 (powder metallurgy)、黏合（b〇nded pr〇cesses)等。 >為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂’下文特舉較佳實施例，並配合所附圖式，作詳細說 明如下。 【實施方式】 [第一實施例] 清同時參照圖1及圖3，其中圖1繪示依照本發明之第雜 一實施例的一種抗流線圈之結構立體圖，圖3繪示圖1中8 字型磁芯的上視圖。 在本實施例中，抗流線圈1 〇 〇，包括：8字型磁芯 102、第一線圈11〇 ，及第二線圈112。其中8字型磁芯1〇2 包括第一環部104及第二環部1〇6，且第一環部1〇4與第二 環部1 0 6是藉由共用部份的環部而連結，此共用的部分在 此稱之為連結部1 0 8 (如圖3虛線所示）。且8字型磁芯1 0 2為 對稱狀。13270twf.ptd Page 7 200535879 V. Description of the invention (3), A dry width J ^ and meat thickness width of the second ring portion are equal to each other. The structure of the 8-shaped magnetic core is to make the magnetic lines of force of the first coil and the second coil symmetrical. The manufacturing method is not limited. For example, it can be casting, ceramic processing, and powder metallurgy. metallurgy), bonded prcesses, etc. > In order to make the above and other objects, features, and advantages of the present invention more comprehensible ' The preferred embodiments will be described below in detail with reference to the accompanying drawings. [Embodiment] [First embodiment] Referring to FIG. 1 and FIG. 3 at the same time, FIG. 1 shows a perspective view of a structure of a current-resistant coil according to a first embodiment of the present invention, and FIG. 3 shows 8 in FIG. Top view of the font core. In this embodiment, the current-resistant coil 100 includes an 8-shaped magnetic core 102, a first coil 110, and a second coil 112. The figure 8 magnetic core 10 includes a first ring portion 104 and a second ring portion 106, and the first ring portion 104 and the second ring portion 106 are formed by the ring portion of the common portion. The connection, this common part is called here the connection part 108 (shown as a dotted line in FIG. 3). The figure 8 magnetic core 102 is symmetrical.
此8字型磁芯1 0 2之製造方式不限，只要結構呈對稱即 可。舉例而言，其製造方式可為鑄造（casting)、陶瓷製 程（ceramic processing)、粉末冶金（powder metallurgy)、黏合（bonded processes)等。舉例而言， 可使用粉末磁怒（ρ 〇 w d e r c 〇 r e )的8字型磁芯，以燒結The manufacturing method of the figure 8 magnetic core 102 is not limited, as long as the structure is symmetrical. For example, the manufacturing method may be casting, ceramic processing, powder metallurgy, bonded processes, and the like. For example, a powder-shaped magnetic core (ρ 〇 w d e r c 〇 r e) can be used to sinter
13270twf.ptd 第8頁 200535879 五、發明說明（4) (sinter)及壓合（press)成形，其材質可採用導磁性粉 末，如肥粒鐵粉末（FERRITE POWDER),矽鐵塵粉末（SAND DUST POWDER)，或是含鉬高導磁合金粉末（Mpp，13270twf.ptd Page 8 200535879 V. Description of the invention (4) (sinter) and press forming, the material can be magnetic conductive powder, such as ferrite powder (FERRITE POWDER), silicon iron dust powder (SAND DUST) POWDER), or molybdenum-containing high-permeability alloy powder (Mpp,
Mo 1 y-perma 1 1 oy powder)。 第一線圈1 1 0纏繞第一環部丨〇 4與連結部丨〇 8。第二線 圈1 1 2纏繞第二環部1 〇 6與連結部丨〇 8。且第一線圈1 1 〇與第 二線圈1 1 2的繞線方式相對稱。其中纏繞連結部丨〇 8之第一 線圈1 1 0與第二線圈1 1 2彼此是以儘量不重疊的方式，亦即 最少重疊的方式纏繞於連結部丨〇 8。 再請同時參照圖2，其繪示圖1之抗流線圈的電路簡 圖0Mo 1 y-perma 1 1 oy powder). The first coil 110 is wound around the first ring portion 〇〇 4 and the connection portion 〇 08. The second coil 1 1 2 is wound around the second ring portion 106 and the connecting portion 8. In addition, the winding patterns of the first coil 1 10 and the second coil 1 12 are symmetrical. The first coil 1 10 and the second coil 1 12 wound around the connection part 08 are wound around the connection part 8 in a manner that they do not overlap with each other as much as possible, that is, with the least overlap. Please refer to FIG. 2 at the same time, which shows a simplified circuit diagram of the anti-current coil of FIG. 1.
第一線圈1 1 0具有兩端點P1 、p2，第二線圈丨丨2具有g 端//4。因而，可取該第一線圈110之一端點與該第 一各、2之一端點作為輸入端，而取第一線圈11〇之另一 二線圈112之另一端作為輸出端。舉例而言，可 P3為& H1，1 〇之端點P1為輸入端，取第二線圈112之端黑 - i ‘ 1 1 ?夕山而取第、一線圈110之端點P 2為輸出端’取第 S二，H Bit fP4為輸出端。藉此實現兩組過濾雜訊的 制共模模式雜訊。〜^刀還具有共模效果，可抑 狀 由 稱 是 因為8字型磁芯呈對稱 1 1 2的繞線方式相對稱，藉 第二線圈1 1 2的磁力線呈對 第二線圈112中各有一部分 ’且第一線圈1 1 0與第二線圈 此特徵，可使第一線圈1 1 〇與 分佈。又因為第一線圈11〇與 纏繞在連結部1 〇 8上，因而共The first coil 1 1 0 has two ends P1 and p2, and the second coil 2 has a g terminal // 4. Therefore, one end of the first coil 110 and one end of the first one and two can be taken as input terminals, and the other end of the other two coils 112 of the first coil 110 can be taken as output terminals. For example, the end point P1 where P3 is & H1, 10 is the input end, the end of the second coil 112 is black-i '1 1-Xishan, and the end point P 2 of the first and first coil 110 is The output terminal is the second terminal, and H Bit fP4 is the output terminal. In this way, two sets of common mode noise are filtered. The knife also has a common mode effect, which can be suppressed because the 8-shaped magnetic core is symmetrically wound in a 1 1 2 winding manner. The magnetic lines of force of the second coil 1 1 2 are opposite to each of the second coil 112. There is a part of it, and the characteristics of the first coil 110 and the second coil can make the first coil 110 and the distribution. Because the first coil 11 and the winding are wound on the connecting portion 108, they are common.
200535879 五、發明說明（5) 模效果顯著，可明顯抑制共模模式雜訊 个卿百 ， j .....…，「 視圖 請再參考第4圖，其繪示第3圖之8字型磁芯之前視剖 〇 為使第一線圈110與第二線圈112的磁力線分性 更為良好，可使連結部108之肉厚寬度Wc、該第—严邻的 肉厚寬度W1 ，及該第二環部的肉厚寬度W2彼此相 、200535879 V. Description of the invention (5) The mode effect is remarkable, which can obviously suppress the noise of common mode mode, j ..........., "For the view, please refer to Figure 4 again, which shows 8 characters in Figure 3 The front view of the magnetic core is to make the magnetic line of force of the first coil 110 and the second coil 112 better, so that the flesh width Wc of the connecting portion 108, the first-neighbor flesh width W1, and the The meat-thickness widths W2 of the second ring portion are opposite each other,
Wc = Wl=W2。以使第一線圈110與第二線圈112 ，^ 力線至8字型磁芯的距離幾乎相等，而達良生^各 換言之，藉由使第一線圈丨丨〇與第二線、對稱性。 呈對稱分佈，可為使共模效果爭為基。、圈1 1 2的磁力線 第一環部1 0 4與第二環n fi ^ 。因而較佳的是， 平面。在本實施例中Λ10—6if相㈤的形i且位於同一 圓形為例，但並不限定 ％邛1 04與第一環部1 〇6雖是以 二線圈1 1 2的磁力線呈料;^ ，只要能使第一線圈1 1 0與第 封閉的多邊形。 對％分佈皆可，例如可為任何一種 [第一實施例] 請同時參照圖5，|絡— 一種抗流線圈之結構立、1不依照本發明之第二實施例的 在本實施例中，括、、去” ° 2 0 2、第一線圈2 1 〇 ， =、、友圈2 0 〇，包括：8字型磁芯 包括第一環部204及第—一線圈212。其中8字型磁芯202 %部206是藉由共用部f =部206，且第一環部2〇4與第二 此稱之為連結部2 0 8 ( /的環部而連結，此共用的部分在 部2 0 6的形狀為正六业線所示）。第一環部2〇4與第二環 / ’以使8字型磁芯2 〇 2呈對稱狀。Wc = Wl = W2. In order to make the distance between the first coil 110 and the second coil 112, the line of force to the 8-shaped magnetic core is almost equal, and in other words, the first coil 110 and the second line are symmetrical. The symmetrical distribution can be used as the basis for the common mode effect. The magnetic field lines of the circle 1 1 2 The first ring portion 10 4 and the second ring n fi ^. It is therefore preferred to be flat. In this embodiment, the shape i of Λ10-6if phase ㈤ is located in the same circle as an example, but it is not limited to% 邛 1 04 and the first ring portion 1 〇 6 although the magnetic field lines of the two coils 1 1 2 are presented; ^ As long as the first coil 110 and the closed polygon can be made. It can be any% distribution, for example, it can be any one. [First Embodiment] Please refer to FIG. 5 at the same time. | — The structure of a current-resistant coil, 1 does not follow the second embodiment of the present invention in this embodiment. , Including ,, to go "° 2 0 2, the first coil 2 1 0, =, and the friend circle 2 0, including: the 8-shaped magnetic core includes the first ring 204 and the first coil 212. 8 of which Type core 202% portion 206 is connected by a common portion f = portion 206, and the first ring portion 204 is connected with the second ring portion which is referred to as a connecting portion 208 (/ The shape of the portion 206 is shown by the Zhengliu industry line.) The first ring portion 204 and the second ring / ′ are formed so that the figure 8 magnetic core 2 02 is symmetrical.
200535879 五、發明說明（6) 此8字型磁芯2 0 2之製造方式不限，只要結構呈對稱即 可。舉例而言，其製造方式可為鑄造（casting)、陶兗製 程（ceramic processing)、粉末冶金（powder metallurgy)、黏合（bonded processes)等 。 舉例而言， 可使用粉末磁芯（P 〇 w d e r c 〇 r e )的8字型磁芯，以燒結 (sinter)及壓合（press)成形，其材質可採用導磁性粉 末，如肥粒鐵粉末（FERRITE POWDER)，矽鐵塵粉末（SAND DUST POWDER)，或是含錮高導磁合金粉末（MPP，200535879 V. Description of the invention (6) The manufacturing method of the 8-shaped magnetic core 202 is not limited, as long as the structure is symmetrical. For example, the manufacturing method can be casting, ceramic processing, powder metallurgy, bonded processes, and the like. For example, a powder-shaped magnetic core (P owderc ore) 8-shaped magnetic core can be used for sintering and press molding. The material can be made of magnetically conductive powder, such as ferrous iron powder ( FERRITE POWDER), silicon iron dust powder (SAND DUST POWDER), or high magnetic permeability alloy powder (MPP,
Mo 1y-perma 1 1 oy powder ) 〇 第一線圈2 1 0纏繞第一環部2 〇 4與連結部2 0 8。第二線 圈212纏繞第二環部206與連結部208。且第一線圈210與第 二線圈2 1 2的繞線方式相對稱。其中纏繞連結部2 〇 8之第一 線圈2 1 0與第二線圈2 1 2彼此是以儘量不重疊的方式，亦即 最少重疊的方式纏繞於連結部2 〇 8。 因為8字型磁芯呈對稱狀，且第一線圈2丨〇與第二線圈 2 1 2的繞線方式相對稱，藉由此特徵，可使第一線圈2 1 〇與 第二線圈2 1 2的磁力線呈對稱分佈。又第一線圈2丨〇與第二 線圈2 1 2中各有一部分是纏繞在連結部2 〇 8上，因而共模效 果顯著，可明顯抑制共模模式雜訊。 為使第一線圈2 1 〇與第二線圈2丨2的磁力線分佈對稱性 更為良好’可使連結部208之肉厚寬度、該第一環部的肉 厚寬度，及該第二環部的肉厚寬度彼此相等。以使第一線 圈2 1 0與第二線圈2 1 2所產生之各磁力線至8字型磁芯的距 離幾乎相等’而達良好的對稱性。Mo 1y-perma 1 1 oy powder) 〇 The first coil 2 1 0 is wound around the first ring portion 204 and the connecting portion 208. The second coil 212 is wound around the second ring portion 206 and the connection portion 208. The winding patterns of the first coil 210 and the second coil 2 1 2 are symmetrical. Among them, the first coil 2 10 and the second coil 2 12 wound around the connecting portion 2008 are wound around the connecting portion 2008 in a manner that does not overlap with each other as much as possible, that is, with the least overlap. Because the figure 8 core is symmetrical, and the winding patterns of the first coil 2 丨 0 and the second coil 2 1 2 are symmetrical, with this feature, the first coil 2 1 0 and the second coil 2 1 can be made. The magnetic field lines of 2 are symmetrically distributed. In addition, a part of each of the first coil 2 and the second coil 2 12 is wound on the connecting portion 2008, so the common mode effect is remarkable, and the common mode noise can be significantly suppressed. In order to make the distribution of the magnetic field lines of the first coil 2 10 and the second coil 2 2 2 more symmetrical, the flesh width of the connecting portion 208, the flesh width of the first ring portion, and the second ring portion The thickness of the meat is equal to each other. The distance between the magnetic field lines generated by the first coil 2 10 and the second coil 2 12 and the figure 8 core is almost equal 'to achieve a good symmetry.
13270twf.ptd 第11頁 200535879 五、發明說明（7) 換言之，藉由使第一線圈2 1 0與第二線圈2 1 2的磁力線 呈對稱分佈，可為使共模效果更為顯著。因而較佳的是， 第一環部2 0 4與第二環部2 0 6具有相同的形狀，且位於同一 平面。在本實施例中’第一環部2 0 4與第二環部2 〇 6雖是以 正六邊形為例，但並不限定於此，只要能使第一線圈2 1 〇 與第二線圈2 1 2的磁力線呈對稱分佈皆可，例如可為任何 一種封閉的多邊形。 可取該第一線圈2 1 0之一端點與該第二線圈2 1 2之一端13270twf.ptd Page 11 200535879 V. Description of the invention (7) In other words, by making the magnetic field lines of the first coil 2 10 and the second coil 2 12 symmetrically distributed, the common mode effect can be made more significant. Therefore, it is preferable that the first ring portion 204 and the second ring portion 206 have the same shape and are located on the same plane. In this embodiment, although the first ring portion 204 and the second ring portion 206 are taken as an example of a regular hexagon, they are not limited to this, as long as the first coil 2 10 and the second coil can be made. The magnetic field lines of 2 1 2 may be symmetrically distributed, and may be any closed polygon, for example. One end of the first coil 2 1 0 and one end of the second coil 2 1 2
點作為輸入端，而取第一線圈2 1 0之另一端點與第二線圈 2 1 2之另一端作為輸出端。舉例而言，可取第一線圈2 1 〇之 端點P5為輸入端，取第二線圈212之端點P7為輸入端，而 取第一線圈2 1 0之端點p 6為輸出端，取第二線圈2 1 2之端點 P8為輸出端。藉此實現兩組過濾雜訊的功能，且在圖5中 虛線圈選的部分還具有共模效果，可抑制共模模式雜訊。 依照本發明的上述特徵，可知本發明至少具有如下之 線圈及nm特徵’因採用8字型磁&，並使第- 般模式及共 因本發明的抗流線 而可減少使用零 零件的佔用空間 ϊ ϊ8字型磁芯的連接部，因而本發明 的 個抗k線圈便可兼具有一般模式B U L田 依照本發明的特徵，同理如1 圈兼具一般模式及共模模式的效果， 、、 數，有利於製程的簡化，此外還可減小而可減少使 有利於產品的小型化。 夕 可抑制一般模式雜訊及共模模式雜訊。/、模模式的夕The point is used as an input terminal, and the other terminal of the first coil 2 10 and the other terminal of the second coil 2 1 2 are used as an output terminal. For example, the terminal P5 of the first coil 2 10 can be taken as the input terminal, the terminal P7 of the second coil 212 can be taken as the input terminal, and the terminal p 6 of the first coil 2 1 0 can be taken as the output terminal. The terminal P8 of the second coil 2 1 2 is an output terminal. In this way, two sets of noise filtering functions are implemented, and the part selected by the virtual circle in Figure 5 also has a common mode effect, which can suppress common mode noise. According to the above characteristics of the present invention, it can be seen that the present invention has at least the following coil and nm characteristics. 'The use of a figure 8 magnetic & and the normal mode and common use of the anti-streamline of the invention can reduce the use of parts The space occupied by the ϊ ϊ 8-shaped magnetic core, so that an anti-k coil of the present invention can have both the general mode BUL field according to the features of the present invention, for example, one turn has both the general mode and the common mode mode. The effects,, and numbers are conducive to the simplification of the manufacturing process. In addition, the effects can be reduced and the miniaturization of the product can be reduced. It can suppress general mode noise and common mode noise. /, The evening of the mode
200535879 五、發明說明（8) 3 .依照本發明的特徵，因為8字型磁芯的第一環部與 第二環部有一部分（連結部）是共用的，因而可更進一步節 省尺寸空間，有利於產品的小型化。 4.依照本發明的特徵，結合上述優點3及4，有利於製 造成本之降低。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 和範圍内，當可作些許之更動與潤飾，因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。200535879 V. Description of the invention (8) 3. According to the features of the present invention, since the first ring portion and the second ring portion (connection portion) of the figure 8 magnetic core are shared, the size space can be further saved. Conducive to miniaturization of products. 4. According to the features of the present invention, combining the advantages 3 and 4 described above, it is advantageous to reduce the cost. Although the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be determined by the scope of the attached patent application.
13270twf.ptd 第13頁 200535879 圖式簡單說明 圖1是依照本發明之較佳實施例之抗流線圈的結構立 體圖。 圖2是圖1之抗流線圈的電路簡圖。 圖3是圖1中之8字型磁芯的上視圖。 圖4是圖3中之前視剖視圖。 圖5是依照本發明之另一較佳實施例之抗流線圈的結 構立體圖。 【圖式標示說明】 1 0 0、2 0 0 :抗流線圈 1 0 2、2 0 2 : 8字型磁芯 1 0 4、2 0 4 :第一環部 1 0 6、2 0 6 :第二環部 1 0 8、2 0 8 :連結部 1 1 0 、2 1 0 :第一線圈 1 1 2、2 1 2 :第二線圈 P 1 、P 2、P 5、P 6 :第一線圈的端點 P3、P4、P7、P8:第二線圈的端點 W1:第一環部的肉厚寬度 W 2 :第一環部的肉厚寬度 Wc :連結部的肉厚寬度13270twf.ptd Page 13 200535879 Brief Description of Drawings Figure 1 is a perspective view of the structure of a current-resistant coil according to a preferred embodiment of the present invention. FIG. 2 is a schematic circuit diagram of the anti-coil of FIG. 1. FIG. 3 is a top view of the figure 8 magnetic core in FIG. 1. FIG. FIG. 4 is a front cross-sectional view of FIG. 3. Fig. 5 is a perspective view showing the structure of a current-resistant coil according to another preferred embodiment of the present invention. [Illustration of diagrammatic symbols] 1 0 0, 2 0 0: current-resistant coil 1 0 2, 2 0 2: 8-shaped magnetic core 1 0 4, 2 0 4: first ring portion 1 0 6, 2 0 6: 2nd ring part 108, 2 8: connecting part 1 1 0, 2 1 0: first coil 1 1 2, 2 1 2: second coil P 1, P 2, P 5, P 6: first End points of the coil P3, P4, P7, P8: End points of the second coil W1: Flesh width of the first ring portion W2: Flesh width of the first ring portion Wc: Flesh width of the link portion
13270twf.ptd 第14頁13270twf.ptd Page 14
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW93111207A TW200535879A (en) | 2004-04-22 | 2004-04-22 | Choke coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW93111207A TW200535879A (en) | 2004-04-22 | 2004-04-22 | Choke coil |
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| Publication Number | Publication Date |
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| TW200535879A true TW200535879A (en) | 2005-11-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI405369B (en) * | 2008-09-22 | 2013-08-11 | Hon Hai Prec Ind Co Ltd | Electrical connector system |
| TWI409996B (en) * | 2008-09-22 | 2013-09-21 | Hon Hai Prec Ind Co Ltd | Electrical connector system |
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2004
- 2004-04-22 TW TW93111207A patent/TW200535879A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI405369B (en) * | 2008-09-22 | 2013-08-11 | Hon Hai Prec Ind Co Ltd | Electrical connector system |
| TWI409996B (en) * | 2008-09-22 | 2013-09-21 | Hon Hai Prec Ind Co Ltd | Electrical connector system |
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